Astronomy & Earth Science
Star Distance (Parallax) Calculator
Lets users compute and verify star distance (parallax) instantly with formula, steps and examples — no manual math.
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arcseconds
Your result
Distance
1.2953 parsecs
Distance = 1/parallax = 1.295 parsecs = 4.22 light-years.
In light-years
4.2249 ly
About this calculator
Stellar parallax: distance (parsecs) = 1 / parallax angle (arcseconds). A star with 1″ parallax is 1 parsec away — the definition of the parsec. Proxima's 0.772″ gives 1.30 pc.
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